37mm CPL/MCUV Circular Polarizer Multicoated Ultraviolet Filter Kit and Lens Cap in Folding Pouch High Quality Optical Glass CPL Circular Polarizer Filter Reduces glare in water and reflective surfaces, great for foliage in making leaves less shiny MCUV Filter Enhances Colors, Darken Blue Skies turning them into deep rich blues Lens Cap protects your camera lens from dust, moisture, scratches and fingerprints Filters are Double Threaded and includes Foldable pouch and Cleaning Cloth